Lubricating system



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E3. F. IFESHMEM LUBRIGATING SYSTEM Filed Feb. 2]., 1924.

`of the operator.

32, the follower plate 33, and the felt disc 34 which is clamped between the lface plate and the follower plate. Post-rivets 35 may be used for securing the three elements form- Vin the plun er together. A p'm 36, or any ot er suitab e. means, projecting from the side of the plunger rod 30, may be used -for limiting the inward movement of .the plunger into the cylinder 14. g

Inl operationafter the'barrel 8 of my improved compressor has been filled with lubricant and the cap replaced, the operator brings the compressor into position so that the coupling sleeve 21 may be engaged over the outer end of the litting 5 and by rotating the barrel of the un causes the bayonet slots 28 to receive t e ends 7 of the pin of the fitting. When this motion is completed, a sealed connection between the fitting and the coupling' sleeve 21 has been effected. The o erator thereupon ushesy inwardly u on t e handle 37 securedp to the outer end o? the lunger rod 30. This causes the inner end) of the plun er rod 30 to enter the cylinder 14 and disp ace the contents therefrom past the check valve 18. As the operator withdraws the plunger rod from the cylinder 14, the check valve 18 closes and further retractive movement of the plunger rod causes a vacuum, or at least a artial vacuum, to be caused in the cylin er 14, so that when the inner end of the plunger clears the end of the cylinder 14, that is, when it reaches the position shown in Figure 1, the vacuum in the cylinder 14 will be transmitted to the lubricant and atmospheric pressure being exertedupon the outer face of the plun er P will cause thel latter to move inwardly or toward the cylinder 14 and thereb force lubricant from the barrel 8 into the atter. der 14 is primed or filled so that when the plunger ro`d is again moved inwardly, it will di lace the lubricant from the cyllnder 14. e operator can continue to reciprocate the plunger rod 30 until the desired quantity of lubricant has been forced into the fitting and the bearing. n

The cross-sectional area of the cylinder 14 and the piston rod ma be made as small as desired, so thatit will e possible to exert comparatively high pressures upon the lubricant without undue exertion on the part It will also be noted that in my improved construction the high pressure cylinder 14 isprimed or charged with lubricant from the barrel 8 as a'result of the movement of the plunger rod which ejects the lubricant from the 'cylinder 14. This is a very convenient arrangement in that the operator need perform but one kind of operation to assure a supply of lubricant to a fitting.

.The nmbndiment nf my invention Iinnstrated 1n Figure 2 is similar to that shown `form a 'sealed connection with the In this manner the cylin-v vin Fi re 1, except that different means are rovi ed for eiecting the sealed connection 4between the compressor and the fitting. In this form of my invention the fitting is cylindrical in pin ends similar to the element 7 of the construction shown in Figure .1. The couplin sleeve 21 has a transversely extending wal 26' which serves as an abutment for the spring 19 that holds the closure 18 in contour and has` no projecting its closed position. The outer side of this wall 26 has a sphericall shaped projection 38 which is adapte to project into the opening in the end of the fitting 5', and 4by its contact with the edge of this oplening tting. The area of the opening in the fitting 5 should be less than the cross-sectional area of the 'lunger rod 30', so that the ressure exerte upon this plun r rod will effective in holding the sp erical projection 38 in contactwith the fitting.

From the above description it will be apparent that in the modified form of my invention there is no mechanical connection between the fittingy and the com ressor, except that which results from t e pressure exerted upon the lubricant in the cylinder 14. The diameter of the bore of the outer end of the sleeve 21 is preferably made somewhat larger than the diameter of the outer end of the fitting 5 so as to permit slightV angular movement of the compressor relatively to the fitting without breaking oi the ittin or otherwise injurin it. The method o operatin the modi ed form of my invention vill e clearly understood from the descgiption of the method of o erating the emb iment of my invention own in Figure 1.

While I havedescribed the details of the construction of the preferred embodiment of my invention, it is to be clearly understood that my invention is not limited to these details of construction, but is capable of other adaptations and modifications within the scope of the ap ended claims.

, Having thus descri my invention, what I claim is 1. A. lubricant compressor of the class described comprising a barrel, a cap secured to one end of said barrel, a high pressure cylinder secured to the other end of said barrel, a coupling member for makin a quick detachable connection with a lu ricant reeeivin nipple, said member carried by said cylinder, a washer clamped between said cylinder and said coupling member, a valve for said cylinder, sealing means for said coupling, ring means between said washer and sai valve for holding said valve in closed (position, a spring between said washer an said sealing member, a plunger extending through said barrel and cooperating with said cylinder,` and a pisim in Siae inermiv i and eo-arial with said p Unger.

2., AV lubricant ompresser of the .class described comprisin a lubrieantreservor,

a high pressure' cy der' carried by said reservoir, a :free plunger for sadeylinder exienring through. said reservoir', a piston ier saici reservoir freey slidable -therein and ee-axiai with .said plnngena hzindle forl said" plunger, fa coupling`- carried by said cylinder and adapted Vto` make a quick `the springs of sai valve for said eyhnder,` means forming a seat for seld check valve, and a, slngleseparate means formule a common support for member.

Valve and yseid, sealing i In Witness whereof, I hereunto subscribe 20 my name this 15th day of February, 1924.

DOUGLAS nFnsLER.' 

